Bernd, The rear element doesn`t turn during focusing, only the front group turns. Steve Larson Redondo Beach, California ----- Original Message ----- From: "HUDERER Bernd" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, June 14, 2002 4:57 AM Subject: RE: Vivitar Series 1 28/1.9 Lens Focusing
> Hi Steve, > > you wrote: > > Now that makes perfect sense. I think you`re right that the > > rear element > > floats, because my K-mount specimen had a loose filter ring on it, > > Dean (my repairman) took it apart and told me to hold the front > > element group while he tightened some screws, and I don`t > > remember him fighting any springs in the process. > > I also took apart the front parts as I wanted to increase the close > focussing range but I found that's not possible at this lens. But IIRC, the > springs are fixed at the front part ( which moves during focussing and > contains the front element group ) and also at the rear part. Is the rear > element also turning during focussing ? This could be a check whether I'm > right or not.Steve Larson wrote; > > > The nice thing about this list-you`ll get to the bottom of > > it, no matter what. > > That's only one of the very pleasant aspects of the PDML :-)) > > > regards > Bernd H. > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
